Blowout plug



FIG. 1 is an isometric view of a blowout plug embodying my new design;

FIG. 2 is a side cross-sectional view thereof;

FIG. 3 is a side elevation view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is bottom plan view thereof. 

The ornamental design of a blowout plug, as shown and described. 